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An estimation of the CAPM and the security market line (purple) for the Dow Jones Industrial Average over 3 years for monthly data.. In finance, the capital asset pricing model (CAPM) is a model used to determine a theoretically appropriate required rate of return of an asset, to make decisions about adding assets to a well-diversified portfolio.
The consumption-based capital asset pricing model (CCAPM) is a model of the determination of expected (i.e. required) return on an investment. [1] The foundations of this concept were laid by the research of Robert Lucas (1978) and Douglas Breeden (1979). [2] The model is a generalization of the capital asset pricing model (CAPM). While the ...
Investment theory, which is near synonymous, encompasses the body of knowledge used to support the decision-making process of choosing investments, [4] [5] and the asset pricing models are then applied in determining the asset-specific required rate of return on the investment in question, and for hedging.
It is commonly computed using the capital asset pricing model formula: Cost of equity = Risk free rate of return + Premium expected for risk Cost of equity = Risk free rate of return + Beta × (market rate of return – risk free rate of return) where Beta = sensitivity to movements in the relevant market. Thus in symbols we have
In finance, Jensen's alpha [1] (or Jensen's Performance Index, ex-post alpha) is used to determine the abnormal return of a security or portfolio of securities over the theoretical expected return. It is a version of the standard alpha based on a theoretical performance instead of a market index .
For the cost of equity, the analyst will apply a model such as the CAPM most commonly; see Capital asset pricing model § Asset-specific required return and Beta (finance). An unlisted company’s Beta can be based on that of a listed proxy as adjusted for gearing, ie debt, via Hamada's equation.
This required rate of return can then be used to estimate a price for the stock which can be done via a number of methods. [12] The formula for CAPM is: CAPM = (The Risk Free Rate) + (The Beta of the Security) * (The Market Risk Premium) [13] In this model, we use the implied risk premium (market return less risk-free rate) and multiply this ...
The risk-free interest rate is highly significant in the context of the general application of capital asset pricing model which is based on the modern portfolio theory. There are numerous issues with this model, the most basic of which is the reduction of the description of utility of stock holding to the expected mean and variance of the ...